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Thread: psql: FATAL: database "postgres" does not exist or ERROR: 23505: duplicate key value violates unique constraint "pg_namespace_nspname_index"

psql: FATAL: database "postgres" does not exist or ERROR: 23505: duplicate key value violates unique constraint "pg_namespace_nspname_index"

From
TALLURI Nareshkumar
Date:

Hello Postgres Support Team,

 

Today we have an outage, our DB was wend down due to 100% space full at FS. We added space and could able to bring the cluster.

 

DB version: psql (PostgreSQL) 10.12

OS version : Red Hat Enterprise Linux Server release 7.8 (Maipo)

 

[0]postgres@axmdevhkdb008$ [PHKGAXMD008] pg_ctl start -D /AXMDEVHKDB008/postgres/PHKGAXMD008_bck

waiting for server to start....2020-07-14 08:50:42.273 CEST db:[] user:[] [] [00000] LOG:  listening on IPv4 address "176.5.88.68", port 5433

2020-07-14 08:50:42.278 CEST db:[] user:[] [] [00000] LOG:  listening on Unix socket "/var/run/postgresql/.s.PGSQL.5433"

2020-07-14 08:50:42.280 CEST db:[] user:[] [] [00000] LOG:  listening on Unix socket "/tmp/.s.PGSQL.5433"

2020-07-14 08:50:42.546 CEST db:[] user:[] [] [00000] LOG:  redirecting log output to logging collector process

2020-07-14 08:50:42.546 CEST db:[] user:[] [] [00000] HINT:  Future log output will appear in directory "log".

done

server started

__  [RRF]postgres@axmdevhkdb008:/AXMDEVHKDB008/postgres/PHKGAXMD008_bck/base

     [0]postgres@axmdevhkdb008$ [PHKGAXMD008] psql

psql: FATAL:  database "postgres" does not exist

__  [RRF]postgres@axmdevhkdb008:/AXMDEVHKDB008/postgres/PHKGAXMD008_bck/base

     [2]postgres@axmdevhkdb008$ [PHKGAXMD008] ps -ef|grep postgres

root     16567 16513  0 14:12 pts/1    00:00:00 sudo su - postgres

root     16569 16567  0 14:12 pts/1    00:00:00 su - postgres

postgres 16571 16569  0 14:12 pts/1    00:00:00 -ksh

postgres 23888     1  0 14:50 pts/1    00:00:00 /opt/rh/rh-postgresql10/root/usr/bin/postgres -D /AXMDEVHKDB008/postgres/PHKGAXMD008_bck

postgres 23890 23888  0 14:50 ?        00:00:00 postgres: PHKGAXMD008: logger process

postgres 23892 23888  0 14:50 ?        00:00:00 postgres: PHKGAXMD008: checkpointer process

postgres 23893 23888  0 14:50 ?        00:00:00 postgres: PHKGAXMD008: writer process

postgres 23894 23888  0 14:50 ?        00:00:00 postgres: PHKGAXMD008: wal writer process

postgres 23895 23888  0 14:50 ?        00:00:00 postgres: PHKGAXMD008: autovacuum launcher process

postgres 23896 23888  0 14:50 ?        00:00:00 postgres: PHKGAXMD008: stats collector process

postgres 23897 23888  0 14:50 ?        00:00:00 postgres: PHKGAXMD008: bgworker: logical replication launcher

postgres 24689 16571  0 14:55 pts/1    00:00:00 ps -ef

postgres 24690 16571  0 14:55 pts/1    00:00:00 grep --color=auto postgres

__  [RRF]postgres@axmdevhkdb008:/AXMDEVHKDB008/postgres/PHKGAXMD008_bck/base

 

We have the directories at Data location.

 

     [2]postgres@axmdevhkdb008$ [PHKGAXMD008] ls -lrt

total 180

drwx------ 2 postgres postgres   4096 Jan  2  2020 1

drwx------ 2 postgres postgres   4096 Jan  2  2020 13211

drwx------ 2 postgres postgres   4096 Jul 13 09:51 pgsql_tmp

drwx------ 2 postgres postgres 139264 Jul 13 21:02 16389

drwx------ 2 postgres postgres  12288 Jul 13 21:02 13212

drwx------ 2 postgres postgres   4096 Jul 14 11:08 13213

drwx------ 2 postgres postgres  12288 Jul 14 11:08 13214

__  [RRF]postgres@axmdevhkdb008:/AXMDEVHKDB008/postgres/PHKGAXMD008_bck/base

 

 

How to overcome this ?

 

Note: we don’t have any wal files, it is ok for us if we could bring it up with our recover.

 

2 nd one:

 

Since we are not able to connect to DB , we did a new initialization and copy the directories from base directory to new base directory(in new data location)

 

And update pg_catalog.pg_database table with the DB name

 

(postgres@[local]:5433)# [PHKGAXMP003]INSERT INTO

-- #       pg_catalog.pg_database(

-- #       datname, datdba, encoding, datcollate, datctype, datistemplate, datallowconn,

-- #       datconnlimit, datlastsysoid, datfrozenxid, datminmxid, dattablespace, datacl)

-- #     VALUES(

-- #                              -- Write Your collation

-- #       'axiom', 10, 0, 'C', 'C',

-- #       False, True, -1, 16389, '536', '1', 1663, Null);

INSERT 16384 1

Time: 70.239 ms

(postgres@[local]:5433)# [PHKGAXMP003]select oid from pg_database a where a.datname = 'axiom';

  oid

-------

16384

(1 row)

 

 

After this we could able to see the DB axiom.

 

   Name    |  Owner   | Encoding  | Collate | Ctype |   Access privileges   |  Size   | Tablespace |                Description

-----------+----------+-----------+---------+-------+-----------------------+---------+------------+--------------------------------------------

axiom     | postgres | SQL_ASCII | C       | C     |                       | 16 GB   | pg_default |

postgres  | postgres | SQL_ASCII | C       | C     |                       | 7647 kB | pg_default | default administrative connection database

template0 | postgres | SQL_ASCII | C       | C     | =c/postgres          +| 7513 kB | pg_default | unmodifiable empty database

           |          |           |         |       | postgres=CTc/postgres |         |            |

template1 | postgres | SQL_ASCII | C       | C     | =c/postgres          +| 7513 kB | pg_default | default template for new databases

           |          |           |         |       | postgres=CTc/postgres |         |            |

(4 rows)

 

 

But no schema and username

 

Some how we could manage to create the user.

 

(postgres@[local]:5433)# [PHKGAXMP003]create user axiomdevdb01 with password 'xxxxxxx';

CREATE ROLE

Time: 7.373 ms

(postgres@[local]:5433)# [PHKGAXMP003]\du

                                     List of roles

  Role name   |                         Attributes                         | Member of

--------------+------------------------------------------------------------+-----------

axiomdevdb01 |                                                            | {}

postgres     | Superuser, Create role, Create DB, Replication, Bypass RLS | {}

 

(postgres@[local]:5433)# [PHKGAXMP003]grant connect on database axiom to axiomdevdb01;

GRANT

Time: 5.274 ms

(postgres@[local]:5433)# [PHKGAXMP003]grant all privileges on database axiom to axiomdevdb01;

GRANT

Time: 1.677 ms

(postgres@[local]:5433)# [PHKGAXMP003]\l+

                                                                 List of databases

   Name    |  Owner   | Encoding  | Collate | Ctype |     Access privileges     |  Size   | Tablespace |                Description

-----------+----------+-----------+---------+-------+---------------------------+---------+------------+--------------------------------------------

axiom     | postgres | SQL_ASCII | C       | C     | =Tc/postgres             +| 16 GB   | pg_default |

           |          |           |         |       | postgres=CTc/postgres    +|         |            |

           |          |           |         |       | axiomdevdb01=CTc/postgres |         |            |

postgres  | postgres | SQL_ASCII | C       | C     |                           | 7647 kB | pg_default | default administrative connection database

template0 | postgres | SQL_ASCII | C       | C     | =c/postgres              +| 7513 kB | pg_default | unmodifiable empty database

           |          |           |         |       | postgres=CTc/postgres     |         |            |

template1 | postgres | SQL_ASCII | C       | C     | =c/postgres              +| 7513 kB | pg_default | default template for new databases

           |          |           |         |       | postgres=CTc/postgres     |         |            |

(4 rows)

 

 

But not able to create the schema:

 

(postgres@[local]:5433)# [PHKGAXMP003]create schema ax_system;

ERROR:  23505: duplicate key value violates unique constraint "pg_namespace_nspname_index"

DETAIL:  Key (nspname)=(ax_system) already exists.

SCHEMA NAME:  pg_catalog

TABLE NAME:  pg_namespace

CONSTRAINT NAME:  pg_namespace_nspname_index

LOCATION:  _bt_check_unique, nbtinsert.c:434

Time: 17.752 ms

 

 

But we could able to see the tables with schema name “NULL”

 

(postgres@[local]:5433)# [PHKGAXMP003]select * from pg_tables;

     schemaname     |          tablename           |  tableowner  | tablespace | hasindexes | hasrules | hastriggers | rowsecurity

--------------------+------------------------------+--------------+------------+------------+----------+-------------+-------------

[null]             | axiom_object_dependencies    | axiomdevdb01 | [null]     | t          | f        | f           | f

[null]             | axiom_archive_instances      | axiomdevdb01 | [null]     | t          | f        | f           | f

[null]             | axiom_report_history         | axiomdevdb01 | [null]     | t          | f        | f           | f

[null]             | axiom_task_history           | axiomdevdb01 | [null]     | t          | f        | f           | f

[null]             | event_number                 | axiomdevdb01 | [null]     | t          | f        | f           | f

pg_catalog         | pg_statistic                 | postgres     | [null]     | t          | f        | f           | f

pg_catalog         | pg_type                      | postgres     | [null]     | t          | f        | f           | f

[null]             | axo_hb                       | axiomdevdb01 | [null]     | t          | f        | f           | f

[null]             | axiom_object_search_index    | axiomdevdb01 | [null]     | t          | f        | f           | f

[null]             | axod_rce                     | axiomdevdb01 | [null]     | t          | f        | f           | f

[null]             | axos_rce_mgmt_1_0            | axiomdevdb01 | [null]     | t          | f        | f           | f

 

 

SO Please help us how to proceed with this?

 

Regards,

Narresh

 

 

=========================================================

Ce message et toutes les pieces jointes (ci-apres le "message")
sont confidentiels et susceptibles de contenir des informations
couvertes par le secret professionnel. Ce message est etabli
a l'intention exclusive de ses destinataires. Toute utilisation
ou diffusion non autorisee interdite.
Tout message electronique est susceptible d'alteration. La SOCIETE GENERALE
et ses filiales declinent toute responsabilite au titre de ce message
s'il a ete altere, deforme falsifie.

=========================================================

This message and any attachments (the "message") are confidential,
intended solely for the addresses, and may contain legally privileged
information. Any unauthorized use or dissemination is prohibited.
E-mails are susceptible to alteration. Neither SOCIETE GENERALE nor any
of its subsidiaries or affiliates shall be liable for the message
if altered, changed or falsified.

=========================================================

RE: psql: FATAL: database "postgres" does not exist or ERROR: 23505: duplicate key value violates unique constraint "pg_namespace_nspname_index"

From
TALLURI Nareshkumar
Date:

 

Hello Team,

 

Can some one help us on this please , Actually we are blocked .

 

Regards,

Narresh

From: TALLURI Nareshkumar SgscGtsPasDre
Sent: Tuesday, July 14, 2020 5:20 PM
To: pgsql-general@lists.postgresql.org
Subject: psql: FATAL: database "postgres" does not exist or ERROR: 23505: duplicate key value violates unique constraint "pg_namespace_nspname_index"

 

Hello Postgres Support Team,

 

Today we have an outage, our DB was wend down due to 100% space full at FS. We added space and could able to bring the cluster.

 

DB version: psql (PostgreSQL) 10.12

OS version : Red Hat Enterprise Linux Server release 7.8 (Maipo)

 

[0]postgres@axmdevhkdb008$ [PHKGAXMD008] pg_ctl start -D /AXMDEVHKDB008/postgres/PHKGAXMD008_bck

waiting for server to start....2020-07-14 08:50:42.273 CEST db:[] user:[] [] [00000] LOG:  listening on IPv4 address "176.5.88.68", port 5433

2020-07-14 08:50:42.278 CEST db:[] user:[] [] [00000] LOG:  listening on Unix socket "/var/run/postgresql/.s.PGSQL.5433"

2020-07-14 08:50:42.280 CEST db:[] user:[] [] [00000] LOG:  listening on Unix socket "/tmp/.s.PGSQL.5433"

2020-07-14 08:50:42.546 CEST db:[] user:[] [] [00000] LOG:  redirecting log output to logging collector process

2020-07-14 08:50:42.546 CEST db:[] user:[] [] [00000] HINT:  Future log output will appear in directory "log".

done

server started

__  [RRF]postgres@axmdevhkdb008:/AXMDEVHKDB008/postgres/PHKGAXMD008_bck/base

     [0]postgres@axmdevhkdb008$ [PHKGAXMD008] psql

psql: FATAL:  database "postgres" does not exist

__  [RRF]postgres@axmdevhkdb008:/AXMDEVHKDB008/postgres/PHKGAXMD008_bck/base

     [2]postgres@axmdevhkdb008$ [PHKGAXMD008] ps -ef|grep postgres

root     16567 16513  0 14:12 pts/1    00:00:00 sudo su - postgres

root     16569 16567  0 14:12 pts/1    00:00:00 su - postgres

postgres 16571 16569  0 14:12 pts/1    00:00:00 -ksh

postgres 23888     1  0 14:50 pts/1    00:00:00 /opt/rh/rh-postgresql10/root/usr/bin/postgres -D /AXMDEVHKDB008/postgres/PHKGAXMD008_bck

postgres 23890 23888  0 14:50 ?        00:00:00 postgres: PHKGAXMD008: logger process

postgres 23892 23888  0 14:50 ?        00:00:00 postgres: PHKGAXMD008: checkpointer process

postgres 23893 23888  0 14:50 ?        00:00:00 postgres: PHKGAXMD008: writer process

postgres 23894 23888  0 14:50 ?        00:00:00 postgres: PHKGAXMD008: wal writer process

postgres 23895 23888  0 14:50 ?        00:00:00 postgres: PHKGAXMD008: autovacuum launcher process

postgres 23896 23888  0 14:50 ?        00:00:00 postgres: PHKGAXMD008: stats collector process

postgres 23897 23888  0 14:50 ?        00:00:00 postgres: PHKGAXMD008: bgworker: logical replication launcher

postgres 24689 16571  0 14:55 pts/1    00:00:00 ps -ef

postgres 24690 16571  0 14:55 pts/1    00:00:00 grep --color=auto postgres

__  [RRF]postgres@axmdevhkdb008:/AXMDEVHKDB008/postgres/PHKGAXMD008_bck/base

 

We have the directories at Data location.

 

     [2]postgres@axmdevhkdb008$ [PHKGAXMD008] ls -lrt

total 180

drwx------ 2 postgres postgres   4096 Jan  2  2020 1

drwx------ 2 postgres postgres   4096 Jan  2  2020 13211

drwx------ 2 postgres postgres   4096 Jul 13 09:51 pgsql_tmp

drwx------ 2 postgres postgres 139264 Jul 13 21:02 16389

drwx------ 2 postgres postgres  12288 Jul 13 21:02 13212

drwx------ 2 postgres postgres   4096 Jul 14 11:08 13213

drwx------ 2 postgres postgres  12288 Jul 14 11:08 13214

__  [RRF]postgres@axmdevhkdb008:/AXMDEVHKDB008/postgres/PHKGAXMD008_bck/base

 

 

How to overcome this ?

 

Note: we don’t have any wal files, it is ok for us if we could bring it up with our recover.

 

2 nd one:

 

Since we are not able to connect to DB , we did a new initialization and copy the directories from base directory to new base directory(in new data location)

 

And update pg_catalog.pg_database table with the DB name

 

(postgres@[local]:5433)# [PHKGAXMP003]INSERT INTO

-- #       pg_catalog.pg_database(

-- #       datname, datdba, encoding, datcollate, datctype, datistemplate, datallowconn,

-- #       datconnlimit, datlastsysoid, datfrozenxid, datminmxid, dattablespace, datacl)

-- #     VALUES(

-- #                              -- Write Your collation

-- #       'axiom', 10, 0, 'C', 'C',

-- #       False, True, -1, 16389, '536', '1', 1663, Null);

INSERT 16384 1

Time: 70.239 ms

(postgres@[local]:5433)# [PHKGAXMP003]select oid from pg_database a where a.datname = 'axiom';

  oid

-------

16384

(1 row)

 

 

After this we could able to see the DB axiom.

 

   Name    |  Owner   | Encoding  | Collate | Ctype |   Access privileges   |  Size   | Tablespace |                Description

-----------+----------+-----------+---------+-------+-----------------------+---------+------------+--------------------------------------------

axiom     | postgres | SQL_ASCII | C       | C     |                       | 16 GB   | pg_default |

postgres  | postgres | SQL_ASCII | C       | C     |                       | 7647 kB | pg_default | default administrative connection database

template0 | postgres | SQL_ASCII | C       | C     | =c/postgres          +| 7513 kB | pg_default | unmodifiable empty database

           |          |           |         |       | postgres=CTc/postgres |         |            |

template1 | postgres | SQL_ASCII | C       | C     | =c/postgres          +| 7513 kB | pg_default | default template for new databases

           |          |           |         |       | postgres=CTc/postgres |         |            |

(4 rows)

 

 

But no schema and username

 

Some how we could manage to create the user.

 

(postgres@[local]:5433)# [PHKGAXMP003]create user axiomdevdb01 with password 'xxxxxxx';

CREATE ROLE

Time: 7.373 ms

(postgres@[local]:5433)# [PHKGAXMP003]\du

                                     List of roles

  Role name   |                         Attributes                         | Member of

--------------+------------------------------------------------------------+-----------

axiomdevdb01 |                                                            | {}

postgres     | Superuser, Create role, Create DB, Replication, Bypass RLS | {}

 

(postgres@[local]:5433)# [PHKGAXMP003]grant connect on database axiom to axiomdevdb01;

GRANT

Time: 5.274 ms

(postgres@[local]:5433)# [PHKGAXMP003]grant all privileges on database axiom to axiomdevdb01;

GRANT

Time: 1.677 ms

(postgres@[local]:5433)# [PHKGAXMP003]\l+

                                                                 List of databases

   Name    |  Owner   | Encoding  | Collate | Ctype |     Access privileges     |  Size   | Tablespace |                Description

-----------+----------+-----------+---------+-------+---------------------------+---------+------------+--------------------------------------------

axiom     | postgres | SQL_ASCII | C       | C     | =Tc/postgres             +| 16 GB   | pg_default |

           |          |           |         |       | postgres=CTc/postgres    +|         |            |

           |          |           |         |       | axiomdevdb01=CTc/postgres |         |            |

postgres  | postgres | SQL_ASCII | C       | C     |                           | 7647 kB | pg_default | default administrative connection database

template0 | postgres | SQL_ASCII | C       | C     | =c/postgres              +| 7513 kB | pg_default | unmodifiable empty database

           |          |           |         |       | postgres=CTc/postgres     |         |            |

template1 | postgres | SQL_ASCII | C       | C     | =c/postgres              +| 7513 kB | pg_default | default template for new databases

           |          |           |         |       | postgres=CTc/postgres     |         |            |

(4 rows)

 

 

But not able to create the schema:

 

(postgres@[local]:5433)# [PHKGAXMP003]create schema ax_system;

ERROR:  23505: duplicate key value violates unique constraint "pg_namespace_nspname_index"

DETAIL:  Key (nspname)=(ax_system) already exists.

SCHEMA NAME:  pg_catalog

TABLE NAME:  pg_namespace

CONSTRAINT NAME:  pg_namespace_nspname_index

LOCATION:  _bt_check_unique, nbtinsert.c:434

Time: 17.752 ms

 

 

But we could able to see the tables with schema name “NULL”

 

(postgres@[local]:5433)# [PHKGAXMP003]select * from pg_tables;

     schemaname     |          tablename           |  tableowner  | tablespace | hasindexes | hasrules | hastriggers | rowsecurity

--------------------+------------------------------+--------------+------------+------------+----------+-------------+-------------

[null]             | axiom_object_dependencies    | axiomdevdb01 | [null]     | t          | f        | f           | f

[null]             | axiom_archive_instances      | axiomdevdb01 | [null]     | t          | f        | f           | f

[null]             | axiom_report_history         | axiomdevdb01 | [null]     | t          | f        | f           | f

[null]             | axiom_task_history           | axiomdevdb01 | [null]     | t          | f        | f           | f

[null]             | event_number                 | axiomdevdb01 | [null]     | t          | f        | f           | f

pg_catalog         | pg_statistic                 | postgres     | [null]     | t          | f        | f           | f

pg_catalog         | pg_type                      | postgres     | [null]     | t          | f        | f           | f

[null]             | axo_hb                       | axiomdevdb01 | [null]     | t          | f        | f           | f

[null]             | axiom_object_search_index    | axiomdevdb01 | [null]     | t          | f        | f           | f

[null]             | axod_rce                     | axiomdevdb01 | [null]     | t          | f        | f           | f

[null]             | axos_rce_mgmt_1_0            | axiomdevdb01 | [null]     | t          | f        | f           | f

 

 

SO Please help us how to proceed with this?

 

Regards,

Narresh

 

 

=========================================================

Ce message et toutes les pieces jointes (ci-apres le "message")
sont confidentiels et susceptibles de contenir des informations
couvertes par le secret professionnel. Ce message est etabli
a l'intention exclusive de ses destinataires. Toute utilisation
ou diffusion non autorisee interdite.
Tout message electronique est susceptible d'alteration. La SOCIETE GENERALE
et ses filiales declinent toute responsabilite au titre de ce message
s'il a ete altere, deforme falsifie.

=========================================================

This message and any attachments (the "message") are confidential,
intended solely for the addresses, and may contain legally privileged
information. Any unauthorized use or dissemination is prohibited.
E-mails are susceptible to alteration. Neither SOCIETE GENERALE nor any
of its subsidiaries or affiliates shall be liable for the message
if altered, changed or falsified.

=========================================================

RE: psql: FATAL: database "postgres" does not exist or ERROR: 23505: duplicate key value violates unique constraint "pg_namespace_nspname_index"

From
"Daniel Verite"
Date:
    TALLURI Nareshkumar wrote:

>      [0]postgres@axmdevhkdb008$ [PHKGAXMD008] psql
> psql: FATAL:  database "postgres" does not exist

That's not necessarily a problem. The "postgres" database is generally
empty and some installations don't even have one.
Use "psql -d template1" instead, or start postgres in single-user mode.

> Since we are not able to connect to DB , we did a new initialization and
> copy the directories from base directory to new base directory(in new data
> location)

This can't work. If you have a backup from just before that point,
you should restore it and work from that without writing anything into
the data directory.


Best regards,
--
Daniel Vérité
PostgreSQL-powered mailer: https://www.manitou-mail.org
Twitter: @DanielVerite

Re: psql: FATAL: database "postgres" does not exist or ERROR: 23505: duplicate key value violates unique constraint "pg_namespace_nspname_index"

From
Naresh Kumar
Date:
Thanks Denial,

Already I tried to connect with template0, template1, user database name, postgres, nothing is working getting same error message as mentioned in trail mail.

For the second one, yes we don't have backups to restore, we don't have any option apart from data directory(no wal files)

Regards,
Narresh


On Wed 15 Jul, 2020, 3:28 PM Daniel Verite <daniel@manitou-mail.org wrote:
        TALLURI Nareshkumar wrote:

>      [0]postgres@axmdevhkdb008$ [PHKGAXMD008] psql
> psql: FATAL:  database "postgres" does not exist

That's not necessarily a problem. The "postgres" database is generally
empty and some installations don't even have one.
Use "psql -d template1" instead, or start postgres in single-user mode.

> Since we are not able to connect to DB , we did a new initialization and
> copy the directories from base directory to new base directory(in new data
> location)

This can't work. If you have a backup from just before that point,
you should restore it and work from that without writing anything into
the data directory.


Best regards,
--
Daniel Vérité
PostgreSQL-powered mailer: https://www.manitou-mail.org
Twitter: @DanielVerite


Re: psql: FATAL: database "postgres" does not exist or ERROR: 23505: duplicate key value violates unique constraint "pg_namespace_nspname_index"

From
Karsten Hilbert
Date:
On Wed, Jul 15, 2020 at 10:03:06PM +0530, Naresh Kumar wrote:

> Already I tried to connect with template0, template1, user database name,
> postgres, nothing is working getting same error message as mentioned in
> trail mail.
>
> For the second one, yes we don't have backups to restore, we don't have any
> option apart from data directory(no wal files)

At this point you are very likely in need of (highly)
specialized professional help.

Karsten
--
GPG  40BE 5B0E C98E 1713 AFA6  5BC0 3BEA AC80 7D4F C89B

Re: psql: FATAL: database "postgres" does not exist or ERROR: 23505: duplicate key value violates unique constraint "pg_namespace_nspname_index"

From
Naresh Kumar
Date:
Yes Karsten, 

Can some one help us on this please.

Regards,
Narresh

On Wed 15 Jul, 2020, 10:55 PM Karsten Hilbert <Karsten.Hilbert@gmx.net wrote:
On Wed, Jul 15, 2020 at 10:03:06PM +0530, Naresh Kumar wrote:

> Already I tried to connect with template0, template1, user database name,
> postgres, nothing is working getting same error message as mentioned in
> trail mail.
>
> For the second one, yes we don't have backups to restore, we don't have any
> option apart from data directory(no wal files)

At this point you are very likely in need of (highly)
specialized professional help.

Karsten
--
GPG  40BE 5B0E C98E 1713 AFA6  5BC0 3BEA AC80 7D4F C89B


Re: psql: FATAL: database "postgres" does not exist or ERROR: 23505: duplicate key value violates unique constraint "pg_namespace_nspname_index"

From
Christophe Pettus
Date:

> On Jul 16, 2020, at 18:32, Naresh Kumar <tnaresh43@gmail.com> wrote:
>
> Can some one help us on this please.

To be clear, what you almost certainly have here is serious data corruption.  You will need to find a (paid,
commercial)specialist to help you with the recovery.  You are unlikely to get the level of support you need on this
list,for free. 

--
-- Christophe Pettus
   xof@thebuild.com

Re: psql: FATAL: database "postgres" does not exist or ERROR: 23505: duplicate key value violates unique constraint "pg_namespace_nspname_index"

From
Naresh Kumar
Date:
Thanks Christopher, if you any such contacts can you share with us.

Regards,
Narresh

On Fri 17 Jul, 2020, 7:04 AM Christophe Pettus <xof@thebuild.com wrote:


> On Jul 16, 2020, at 18:32, Naresh Kumar <tnaresh43@gmail.com> wrote:
>
> Can some one help us on this please.

To be clear, what you almost certainly have here is serious data corruption.  You will need to find a (paid, commercial) specialist to help you with the recovery.  You are unlikely to get the level of support you need on this list, for free.

--
-- Christophe Pettus
   xof@thebuild.com

Re: psql: FATAL: database "postgres" does not exist or ERROR: 23505: duplicate key value violates unique constraint "pg_namespace_nspname_index"

From
Christophe Pettus
Date:

> On Jul 16, 2020, at 19:08, Naresh Kumar <tnaresh43@gmail.com> wrote:
>
> Thanks Christopher, if you any such contacts can you share with us.

The community maintains this page; I'm sure you can find someone who can help you there:

    https://www.postgresql.org/support/professional_support/

--
-- Christophe Pettus
   xof@thebuild.com

Re: psql: FATAL: database "postgres" does not exist or ERROR: 23505: duplicate key value violates unique constraint "pg_namespace_nspname_index"

From
Naresh Kumar
Date:
Thanks, I will check it out. 

On Fri 17 Jul, 2020, 7:42 AM Christophe Pettus <xof@thebuild.com wrote:


> On Jul 16, 2020, at 19:08, Naresh Kumar <tnaresh43@gmail.com> wrote:
>
> Thanks Christopher, if you any such contacts can you share with us.

The community maintains this page; I'm sure you can find someone who can help you there:

        https://www.postgresql.org/support/professional_support/

--
-- Christophe Pettus
   xof@thebuild.com